LAS/LAZ file without CRS fails to load

[saberraz]

What is the bug or the crash?

Point cloud layer does not load at all when the layer does not contain CRS. It would be good to have it behave the same way as other layers are loaded in QGIS - allow the layer to load and just mark it as having undefined CRS, so that user can manually specify it later.

A message like this pops up in the message log:

2022-09-29T09:48:03     WARNING    Source de données invalide (readers.las: Global encoding WKT flag not set for point format 6 - 10.) 

Steps to reproduce the issue

1- Load a point cloud layer with no CRS
2- It will not load, leaving the message mentioned above

Versions

3.26

Supported QGIS version

• I'm running a supported QGIS version according to the roadmap.

New profile

• I tried with a new QGIS profile

Additional context

No response

[AliFaisal96]

same issue here

[songzhenhe]

same issues here, 3.28 and 3.34 version

[songzhenhe]

issue is being discussed here: #51862